Question 1

Select the major components of a sliding vane compressor:

Accepted Answer

A)  off center rotor 
B)  direct center rotor 
C)  crankshaft 
D)  discharge port 
E)  vanes
F) diffuser plates
G) air cooled jacket
H) connecting rod
I) impellers
J) piston
K) suction port
L) impellers
M) casing and base
N) cooling water jacket
P) cylinder 
A)  off center rotor 
B)  direct center rotor 
C)  crankshaft 
D)  discharge port 
E)  vanes
F) diffuser plates
G) air cooled jacket
H) connecting rod
I) impellers
J) piston
K) suction port
L) impellers
M) casing and base
N) cooling water jacket
P) cylinder A,D,E,K,M,N,O

Question 2

Lobe compressors are characterized by the:

Accepted Answer

A)  close clearances between the casing and impellers 
B)  two kidney bean shaped impellers 
C)  use of timing gears 
D)  all the above 
A)  close clearances between the casing and impellers 
B)  two kidney bean shaped impellers 
C)  use of timing gears 
D)  all the above D

Question 3

Liquids are considered to be:

Accepted Answer

A)  non-compressible 
B)  compressible in low pressure operations 
C)  compressible during high pressure operations <500 psig 
D)  compressible in a PD compressor operation 
A)  non-compressible 
B)  compressible in low pressure operations 
C)  compressible during high pressure operations <500 psig 
D)  compressible in a PD compressor operation A

Question 4

Lobe compressors can be utilized as vacuum units.

Accepted Answer

A) True 
 B)False

Question 5

Compressors are primarily designed to:

Accepted Answer

A)  compress gases and small amounts of liquid 
B)  compress relatively dry gases 
C)  compress hot fluids 
D)  work in closed systems 
A)  compress gases and small amounts of liquid 
B)  compress relatively dry gases 
C)  compress hot fluids 
D)  work in closed systems

Question 6

The principle of compression has a measurable relationship between the volume a set weight of gas occupies.

Accepted Answer

A) True 
 B)False

Question 7

Compressed gases will resume _______________ when released:

Accepted Answer

A)  50 % original volume 
B)  71% original volume 
C)  98% original volume 
D)  100 % original volume 
A)  50 % original volume 
B)  71% original volume 
C)  98% original volume 
D)  100 % original volume

Question 8

Gas volume does not vary with temperature and pressure.

Accepted Answer

A) True 
 B)False

Question 9

List two dynamic compressors:

Accepted Answer

A)  dynamic & rotary 
B)  rotary & reciprocating 
C)  centrifugal & axial 
D)  axial & centronic 
A)  dynamic & rotary 
B)  rotary & reciprocating 
C)  centrifugal & axial 
D)  axial & centronic

Question 10

Select the main components of a liquid ring compressor.

Accepted Answer

A)  casing 
B)  large discharge port 
C)  impeller 
D)  large suction port 
E)  small discharge port
F) small suction port
G) inlet guide vanes
H) rotor
I) curved vanes
J) intercooler
K) piston rod
L) air cavity
M) water or seal liquid
N) suction eye 
A)  casing 
B)  large discharge port 
C)  impeller 
D)  large suction port 
E)  small discharge port
F) small suction port
G) inlet guide vanes
H) rotor
I) curved vanes
J) intercooler
K) piston rod
L) air cavity
M) water or seal liquid
N) suction eye

Question 11

What is the first step in starting up a compressor:

Accepted Answer

The answer of What is the first step in starting...

Question 12

Centrifugal compressors operate by:

Accepted Answer

A)  compressing the gases in a cylinder and releasing 
B)  accelerating the gas axially along the shaft 
C)  accelerating the gas and converting the energy to pressure 
D)  a & c 
A)  compressing the gases in a cylinder and releasing 
B)  accelerating the gas axially along the shaft 
C)  accelerating the gas and converting the energy to pressure 
D)  a & c

Question 13

Piston and cylinder lubrication is more important in:

Accepted Answer

A)  safety design than actual application 
B)  c & d 
C)  a pump 
D)  a compressor 
A)  safety design than actual application 
B)  c & d 
C)  a pump 
D)  a compressor

Question 14

A desiccant dryer is used to remove moisture from compressor gases as they are passed over a chemical called desiccant.

Accepted Answer

A) True 
 B)False

Question 15

In a sliding vane compressor the gas inlet port is positioned so gas flows into the vanes when they are:

Accepted Answer

A)  fully extended and the largest air pocket is formed 
B)  50% extended and the air pocket is half formed 
C)  25% extended and the air pocket is just forming 
D)  the vanes are always fully extended on a sliding vane compressor because the rotor is positioned "direct center." 
A)  fully extended and the largest air pocket is formed 
B)  50% extended and the air pocket is half formed 
C)  25% extended and the air pocket is just forming 
D)  the vanes are always fully extended on a sliding vane compressor because the rotor is positioned "direct center."

Question 16

Describe two types of compressor layouts.

Accepted Answer

A)  diffuser and stator 
B)  V and L 
C)  open and closed 
D)  parallel and multistage 
A)  diffuser and stator 
B)  V and L 
C)  open and closed 
D)  parallel and multistage

Question 17

The internal lobes on a lobe compressor are designed:

Accepted Answer

A)  not to touch 
B)  with a power lobe that pushes the idler lobe 
C)  with a few thousandths of an inch clearance between casing and lobes. 
D)  a & c 
A)  not to touch 
B)  with a power lobe that pushes the idler lobe 
C)  with a few thousandths of an inch clearance between casing and lobes. 
D)  a & c

Question 18

Reciprocating compressors typical discharge pressure range from:

Accepted Answer

A)  0- 30,000 psi 
B)  0- 20,000 psi 
C)  0- 10,000 psi 
D)  0- 7,500 psi 
A)  0- 30,000 psi 
B)  0- 20,000 psi 
C)  0- 10,000 psi 
D)  0- 7,500 psi

Question 19

The stator blades in axial compressor can be arranged in all the following designs except:

Accepted Answer

A)  fixed 
B)  individually adjustable 
C)  stator-rotor impeller 
D)  continually variable 
A)  fixed 
B)  individually adjustable 
C)  stator-rotor impeller 
D)  continually variable

Question 20

On a centrifugal compressor the part of the impeller vane that comes into contact with the gas first is called the:

Accepted Answer

A)  wear ring outlet 
B)  suction eye 
C)  impeller shroud 
D)  suction vane tip 
A)  wear ring outlet 
B)  suction eye 
C)  impeller shroud 
D)  suction vane tip

Select the major components of a sliding vane compressor:

Lobe compressors are characterized by the:

Liquids are considered to be:

Lobe compressors can be utilized as vacuum units.

Compressors are primarily designed to:

The principle of compression has a measurable relationship between the volume a set weight of gas occupies.

Compressed gases will resume _______________ when released:

Gas volume does not vary with temperature and pressure.

List two dynamic compressors:

Select the main components of a liquid ring compressor.

What is the first step in starting up a compressor:

Centrifugal compressors operate by:

Piston and cylinder lubrication is more important in:

A desiccant dryer is used to remove moisture from compressor gases as they are passed over a chemical called desiccant.

In a sliding vane compressor the gas inlet port is positioned so gas flows into the vanes when they are:

Describe two types of compressor layouts.

The internal lobes on a lobe compressor are designed:

Reciprocating compressors typical discharge pressure range from:

The stator blades in axial compressor can be arranged in all the following designs except:

On a centrifugal compressor the part of the impeller vane that comes into contact with the gas first is called the:

Introduction to Process Equipment

Valves

Piping and Vessels

Pumps

Turbines and Motors

Heat Exchangers

Cooling Towers

Steam Generation- Boilers

Fired Heaters Furnaces

Instruments

Process Diagrams

Utility Systems

Reaction Systems

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Extraction and Other Separation Systems

Plastics Systems

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Exam 5: Compressors

Select the major components of a sliding vane compressor:

Lobe compressors are characterized by the:

Liquids are considered to be:

Lobe compressors can be utilized as vacuum units.

Compressors are primarily designed to:

The principle of compression has a measurable relationship between the volume a set weight of gas occupies.

Compressed gases will resume _______________ when released:

Gas volume does not vary with temperature and pressure.

List two dynamic compressors:

Select the main components of a liquid ring compressor.

What is the first step in starting up a compressor:

Centrifugal compressors operate by:

Piston and cylinder lubrication is more important in:

A desiccant dryer is used to remove moisture from compressor gases as they are passed over a chemical called desiccant.

In a sliding vane compressor the gas inlet port is positioned so gas flows into the vanes when they are:

Describe two types of compressor layouts.

The internal lobes on a lobe compressor are designed:

Reciprocating compressors typical discharge pressure range from:

The stator blades in axial compressor can be arranged in all the following designs except:

On a centrifugal compressor the part of the impeller vane that comes into contact with the gas first is called the:

Introduction to Process Equipment

Valves

Piping and Vessels

Pumps

Turbines and Motors

Heat Exchangers

Cooling Towers

Steam Generation- Boilers

Fired Heaters Furnaces

Instruments

Process Diagrams

Utility Systems

Reaction Systems

Distillation Systems

Extraction and Other Separation Systems

Plastics Systems

Filters